Security Affairs

APRIL 16, 2020

Linksys has reset passwords for all its customers’ after learning on ongoing DNS hijacking attacks aimed at delivering malware. Crooks continue to launch Coronavirus-themed attacks , in the last weeks, experts observed hackers hijacking D-Link and Linksys routers to redirect users to COVID19-themed sites spreading malware.

Passwords 118

Passwords DNS Malware Advertising 118

SecureList

MARCH 10, 2021

Back then, cybercriminals distributed malware under the guise of the Malwarebytes antivirus installer. In the latest campaign, we have seen several apps impersonated by the malware: the ad blockers AdShield and Netshield, as well as the OpenDNS service. Updater.exe downloads from the site transmissionbt[.]org

DNS 143

DNS Antivirus Malware Encryption 143

SecureWorld News

MARCH 29, 2024

Malvertising acts as a vessel for malware propagation. To set such a stratagem in motion, cybercriminals poison legitimate websites with ads that lead to shady URLs or download malicious code camouflaged as something harmless. One of the biggest pitfalls with malvertising is how difficult it can be to detect.

Cybercrime 86

Cybercrime Advertising Engineering Antivirus 86

SecureList

JUNE 5, 2023

Satacom downloader, also known as LegionLoader, is a renowned malware family that emerged in 2019. It is known to use the technique of querying DNS servers to obtain the base64-encoded URL in order to receive the next stage of another malware family currently distributed by Satacom.

Cryptocurrency 82

Cryptocurrency DNS Malware Encryption 82

Security Affairs

FEBRUARY 1, 2019

Security experts at Cybaze – Yoroi ZLab have analyzed a new sample of the AdvisorsBot malware, a downloader that was first spotted in August 2018. As usual, the malware looks like a legitimate e-mail attachment, named as “invoice.doc”. Figure 3 – Piece of VBS script that starts malware infection. DLL Analysis.

Malware 84

Malware DNS Social Engineering Advertising 84

SecureList

OCTOBER 25, 2023

Introduction It’s just another cryptocurrency miner… Nobody would even suspect the mining malware was merely a mask, masquerading behind an intricate modular framework that supports both Linux and Windows. This malware employed a custom EternalBlue SMBv1 exploit to infiltrate its victims’ systems.

Malware 112

Malware DNS Encryption Cryptocurrency 112

Krebs on Security

MARCH 28, 2021

New data suggests someone has compromised more than 21,000 Microsoft Exchange Server email systems worldwide and infected them with malware that invokes both KrebsOnSecurity and Yours Truly by name. Oddly, none of the several dozen antivirus tools available to scan the file at Virustotal.com currently detect it as malicious.

Hacking 351

Hacking Cybercrime DNS Antivirus 351

Krebs on Security

JULY 18, 2022

re network uses at least two free VPN services to lure its users to install a malware-like software that achieves persistence on the user’s computer,” the researchers wrote. These two software are currently unknown to most if not all antivirus companies.” The EULA attached to 911 software downloaded from browsingguard[.]com

VPN 300

VPN Computers and Electronics Antivirus Software 300

Security Affairs

DECEMBER 19, 2022

Botnet operators use to spread the malware via cracked or pirated software and pay-per-install (PPI) schemes. Nozomi analyzed the entire blockchain to discover the C2 domains used by the botnet, the researchers also downloaded over 1500 Glupteba samples from VirusTotal to track the wallet addresses used by the operators.

DNS 99

DNS Antivirus Cryptocurrency Software 99

SecureList

DECEMBER 1, 2023

To exfiltrate data and deliver next-stage malware, the attackers abuse cloud-based data storage, such as Dropbox or Yandex Disk, as well as a temporary file sharing service. The version of Free Download Manager installed by the infected package was released on January 24, 2020.

Malware 96

Malware Ransomware Encryption Energy and Utilities 96

SecureList

MAY 17, 2021

It may also use social engineering to convince victims to download a smartphone app. The group behind Bizzaro uses servers hosted on Azure and Amazon (AWS) and compromised WordPress servers to store the malware and collect telemetry. Bizarro is distributed via MSI packages downloaded by victims from links in spam emails.

Banking 142

Banking Social Engineering Malware Engineering 142

Fox IT

JUNE 2, 2020

Publicly discovered in late April 2020, the Team9 malware family (also known as ‘Bazar [ 1 ]’) appears to be a new malware being developed by the group behind Trickbot. Even though the development of the malware appears to be recent, the developers have already developed two components with rich functionality. Introduction.

Malware 48

Malware DNS Architecture Backups 48

CyberSecurity Insiders

JUNE 29, 2023

Executive summary Credential harvesting is a technique that hackers use to gain unauthorized access to legitimate credentials using a variety of strategies, tactics, and techniques such as phishing and DNS poisoning. Sandboxing is important because it helps to identify and mitigate potential security vulnerabilities, viruses, and malware.

Phishing 85

Phishing Authentication Cyber threats DNS 85

eSecurity Planet

DECEMBER 8, 2023

Domain name service (DNS) attacks threaten every internet connection because they can deny, intercept, and hijack connections. With the internet playing an increasing role in business, securing DNS plays a critical role in both operations and security. Everything You Need to Know.

DNS 113

DNS DDOS Firewall Architecture 113

Security Boulevard

JANUARY 17, 2024

Figure 1 — Cloudflare RBI Diagram The primary focus of RBI is to prevent user interactions with web-based malware such as cross-site scripting (XSS), drive-by downloads, and various forms of malicious JavaScript. Antivirus Inspection Not all RBI products will prioritize this time factor.

DNS 65

DNS Penetration Testing Passwords Encryption 65

SecureList

JUNE 2, 2022

In their initial disclosures on this threat actor, TeamT5 identified three malware families: SpyDealer, Demsty and WinDealer. In 2020, we discovered a whole new distribution method for the WinDealer malware that leverages the automatic update mechanism of select legitimate applications. WinDealer is a modular malware platform.

Malware 117

Malware Encryption Social Engineering Telecommunications 117

SC Magazine

JULY 12, 2021

Between the DNS attacks and ongoing ransomware scourge, it’s beyond time for providers to seek more creative responses to cyber challenges even with limited budgets, in combination with participation in threat-sharing programs and while relying on free or low-cost resources.

Ransomware 112

Ransomware Antivirus Software Technology 112

eSecurity Planet

SEPTEMBER 7, 2021

Or they can package malware that can be directly installed on your machine or come through an email attachment disguised as something trustworthy , like a document or link from your boss. Tracking recent trends in malware code and technique updates. Applying predictive analysis and modeling to look for anomalies in traffic data.

Antivirus 138

Antivirus Software Risk Malware 138

Security Affairs

OCTOBER 12, 2019

The new loader is able to drop the malware directly in memory, it was dubbed BOOSTWRITE and allows threat actors to load several malicious codes, including the Carbanak backdoor. In March, the group carried out attacks delivering a previously unseen malware tracked as SQLRat that drops files and executes SQL scripts on the host.

Identity Theft 76

Identity Theft Hacking Advertising DNS 76

CyberSecurity Insiders

SEPTEMBER 21, 2021

As of August 30, 2021, many malware samples still have zero antivirus (AV) detections and others have low detection rates. 7z to decompress downloaded files. At the end of the execution, the malware deletes any file that has been downloaded. Background. libprocesshider for executing their bot directly from memory.

Cryptocurrency 84

Cryptocurrency Malware Passwords Authentication 84

Security Boulevard

OCTOBER 2, 2023

This blog examines the escalating phishing landscape, shortcomings of common anti-phishing approaches, and why implementing a Protective DNS service as part of a layered defense provides the most effective solution. This is where Protective DNS comes in. Phishing attacks are becoming more automated.

DNS 65

DNS Phishing Social Engineering Engineering 65

eSecurity Planet

FEBRUARY 16, 2021

Malware, short for “malicious software,” is any unwanted software on your computer that, more often than not, is designed to inflict damage. Since the early days of computing, a wide range of malware types with varying functions have emerged. Best Practices to Defend Against Malware. Jump ahead: Adware. RAM scraper.

Malware 105

Malware Adware Spyware Antivirus 105

SecureList

NOVEMBER 26, 2021

The PyInstaller module for Windows contains a script named “Guard” Interestingly, this malware was developed for both Windows and macOS operating systems. The attackers obtain initial access to a system by sending a spear-phishing email to the victim containing a Dropbox download link.

Malware 91

Malware Banking Energy and Utilities Accountability 91

CyberSecurity Insiders

MAY 12, 2021

Staff members downloading malware , providing their sign-in info to strangers on the first request without verifying their legitimacy are typical scenarios in this category. Ordinary users. Unwitting workers are common targets of hackers attacking a company.

Accountability 144

Accountability Scams Risk Software 144

Security Affairs

APRIL 9, 2019

Too many times turned into fully-featured malware implants by unethical hackers and cyber criminals. The installed payload actually is a Base64 encoded PE32 file, file-lessly stored within the registry hive to avoid antivirus detection. Figure 9: The persistence mechanisms of the malware. Technical Analysis. C2 retrieval.

Malware 71

Malware Advertising DNS Antivirus 71

SecureList

APRIL 24, 2023

Introduction We introduced Tomiris to the world in September 2021, following our investigation of a DNS-hijack against a government organization in the Commonwealth of Independent States (CIS). We hypothesize that the general aim is to provide operators with “full-spectrum malware” in order to evade security products.

Malware 94

Malware DNS Government Software 94

SecureList

DECEMBER 23, 2020

The companies that appeared to be of special interest to the malicious actors may have been subjected to deployment of additional persistent malware. Read more about our research on Sunburst malware here. Several publicly available data sets, such as the one from John Bambenek, include DNS requests encoding the victim names.

Malware 59

Malware Telecommunications DNS Government 59

Security Affairs

JULY 28, 2022

Microsoft linked a private-sector offensive actor (PSOA) to attacks using multiple zero-day exploits for its Subzero malware. Microsoft states that multiple news reports have linked the company to the Subzero malware toolset used to hack a broad range of devices, phones, computers, and network and internet-connected devices.

Surveillance 90

Surveillance Malware Authentication DNS 90

eSecurity Planet

AUGUST 23, 2023

Downloading an attachment would, for example, infect the target device with a virus, which could enable hackers to gain access to confidential data, credentials, and networks. Endpoint security tools like EDR typically include security software capable of detecting and blocking dangerous attachments, links, and downloads.

Phishing 98

Phishing Social Engineering Authentication Security Awareness 98

eSecurity Planet

SEPTEMBER 29, 2021

Recent research by Positive Technologies looked at the cyber threat landscape during Q2 2021 and found that ransomware attacks reached “stratospheric” levels, accounting for 69% of all malware attacks, a huge jump from 39% in Q2 2020. Detect compromised accounts, insider threats, and malware. EnigmaSoft. Scan scheduling.

Ransomware 109

Ransomware VPN Backups Malware 109

Cisco Security

DECEMBER 8, 2022

To explore these scams, we used a dedicated computer, segmented from the rest of the network, and leveraged Cisco Secure Malware Analytics to safely open the emails before clicking on links or opening attachments. According to Cisco Umbrella , many of the sites asking for credit card details are known phishing sites, or worse, host malware.

Scams 145

Scams Phishing Malware Internet 145

Security Boulevard

JUNE 15, 2023

Stealers" are a kind of malware designed to run on an endpoint post-compromise, while their primary features center on the theft of user data. Together with our colleagues at InQuest, we present a deep dive technical analysis of the malware. The same way you do in the real world – the market becomes flooded.

Cryptocurrency 52

Cryptocurrency Password Management Malware DNS 52

SecureList

MAY 31, 2021

Out of the 18,000 Orion IT customers affected by the malware, it seems that only a handful were of interest to the attackers. For example, before making the first internet connection to its C2s, the Sunburst malware lies dormant for up to two weeks, preventing easy detection of this behaviour in sandboxes.

Malware 100

Malware Adware Encryption Architecture 100

eSecurity Planet

MARCH 14, 2023

Better network security monitors for attempts to exceed permissions, unusual behavior from authorized users, and network activity that may indicate compromise or malware activity. Endpoint security : protects endpoints with antivirus, endpoint detection and response (EDR) tools, etc. DNS security (IP address redirection, etc.),

Network Security 98

Network Security Firewall Penetration Testing Encryption 98

Security Affairs

DECEMBER 5, 2020

. “In strict accordance with DeathStalker’s traditions, the implant will try to evade detection or sandboxes execution with various tricks such as detecting mouse movements, filtering the client’s MAC addresses, and adapting its execution flow depending on detected antivirus products.”

DNS 84

DNS Phishing Antivirus Encryption 84

Security Affairs

JUNE 4, 2019

Low AV detection of SFX malware. cmd” , which firstly checks for the presence of malware analysis tools. Fake document to divert attention on malware execution. This script tries to download another malicious file from “ [link] ”. Information about C2 and relative DNS. Content of malicious e-mail. Content of SFX.

Passwords 63

Passwords DNS Engineering Malware 63

eSecurity Planet

FEBRUARY 8, 2021

Don Duncan, security engineer at NuData Security, told eSecurity Planet by email that POS systems are often dangerously easy to penetrate with malware , including the following (among many others): Dexter was discovered by Seculert (now Radware) researchers in 2012. vSkimmer malware, a successor to Dexter, dates back to 2013.

Retail 52

Retail Encryption Malware Artificial Intelligence 52